Personal life

He is a very close friend of co-star John Ross Bowie, who plays Barry Kripke on The Big Bang Theory. They met on the set of Ugly Betty, where Sussman played the character of Walter, and Bowie's wife knew one of the actresses. Together they have written three TV pilots together, one of which (Dark Minions) was picked up by Amazon in 2013. Both provided voices for the main characters in the pilot.

At the 200th episode party.

Accident

In November 2014, Kevin broke his leg in a bike accident, causing him to be written out of a couple of episodes of the eight season of The Big Bang Theory. Just like in Kaley Cuoco and Mayim Bialik's cases, his injury was not written into the show when he got back; instead, his broken leg was mostly hidden behind the counter of the Pasadena comic book store.